* {
    font-family: 'Microsoft YaHei';
}

.navbar {
    margin-bottom: 0;
    border: none;
    border-radius: 0;
}

.navbar-brand {
    padding: 7px 15px;
}

.dropdown-menu {
    padding: 0;
    border: none;
}

.caret {
    border-top: none;
    border-bottom: 4px dashed;
}

.banner {
    background-color: #2B80DA;
}

.banner .item>img {
    margin: 0 auto;
}

.engine {
    padding-top: 85px;
    background-color: #fbfaf7;
}

.engine > .container {
    padding-bottom: 105px;
    background: url('../images/engine-back.png') no-repeat right 52px;
    transition: background .5s;
}

.engine .container>h1 {
    color: #0078d7;
    font-size: 48px;
    font-weight: bold;
}

.engine .container>h2 {
    margin-top: 30px;
    margin-bottom: 70px;
    color: #666666;
    font-size: 30px;
}

.engine .engine-item {
    margin-bottom: 35px;
}

.engine .engine-item>.icon,
.engine .engine-item>.intro {
    float: left;
}

.engine .engine-item>.icon {
    position: relative;
    padding: 0 20% 20% 0;
    background: #0078D7;
    border-radius: 3px;
}

.engine .engine-item>.icon img {
    position: absolute;
    top: 50%;
    left: 50%;
    height: 90%;
    transform: translate(-50%, -50%);
}

.engine .engine-item>.intro {
    padding-left: 13px;
    width: 80%;
}

.engine .engine-item>.intro h4 {
    margin-top: 0;
    font-size: 20px;
}

.engine .engine-item>.intro p {
    color: #666666;
}

@media screen and (max-width: 768px) {
    .engine {
        padding-top: 55px;
    }
    .engine .container>h1 {
        font-size: 36px;
        text-align: center;
    }
    .engine .container>h2 {
        font-size: 20px;
        text-align: center;
    }
}

@media screen and (max-width: 992px) {
    .engine > .container {
        background: url('../images/engine-back-sm.png') no-repeat 50% 50%; 
    }
}

@media screen and (min-width:1200px) {
    .container {
        width: 1000px;
    }
}